Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Kc5 win in 3 half-moves
2 Rc1 draw
3 Rc2 draw
4 K6c7 loss in 2 half-moves
5 K6d7 loss in 2 half-moves
6 K6e7 loss in 2 half-moves
7 K8c7 loss in 2 half-moves
8 K8d7 loss in 2 half-moves
9 K8e7 loss in 2 half-moves
10 Kc8 loss in 2 half-moves
11 Kd5 loss in 2 half-moves
12 Ke5 loss in 2 half-moves
13 Ke6 loss in 2 half-moves
14 Ke8 loss in 2 half-moves
15 Ra6 loss in 2 half-moves
16 Rb6 loss in 2 half-moves
17 Rc3 loss in 2 half-moves
18 Rc4 loss in 2 half-moves
19 Rc5 loss in 2 half-moves
20 Rc7 loss in 2 half-moves
21 Rc8 loss in 2 half-moves